Efficient multi-field-coordination fine particulate matter removal device and method

Abstract

The invention discloses an efficient multi-field-coordination fine particulate matter removal device and an efficient multi-field-coordination fine particulate matter removal method. The device comprises an outer field coagulation area, a direct current dust pre-collecting area, a pulse charge coagulation area and a direct current dust collecting area which are connected in sequence, wherein water steam and a chemical agglomeration agent are introduced from a nozzle of the outer field coagulation area respectively; the direct current dust pre-collecting area and the direct current dust collecting area are arranged in a line-plate type symmetric structure, a line electrode applies negative direct current high voltage, and a plate electrode is grounded and adopts layout of a water film electrode; the pulse charge coagulation area is arranged in the line-plate type symmetric structure, the line electrode applies positive pulse high voltage, and the plate electrode is grounded and adopts layout of the water film electrode. The device and the method aim at mineral particulate matters discharged by a fixed source; aerosol particulate matters, particularly fine particulate matters, can be subjected to efficient coagulation removal in a structural form of double coagulation areas and double dust collecting areas by using a multi-field-coordination method combined by a phase-change coagulation growth technology, a chemical agglomeration and flocculation mechanism and an electric coagulation technology, so that the phenomena of back corona, re-entrainment of dust, ash deposition and corrosion of the plate electrode are effectively avoided.

Description

technical field [0001] The invention relates to a particle dust removal device, in particular to a multi-field cooperative fine particle high-efficiency removal device and a method thereof. Background technique [0002] my country is a country that uses coal as its main energy source. While coal combustion provides us with heat and power, it also brings serious particle pollution. Among the sources of fine particles, emissions from coal-fired boilers account for a large part, especially It is a small and medium-sized industrial boiler and industrial kiln widely used in various industries. Due to the lack of corresponding environmental protection control equipment, the pollution is particularly serious. Aerosol particulate matter, especially fine particulate matter PM 2.5 After being discharged into the air, it will seriously affect people's daily life and work, and even threaten people's lives. Due to the small size and light weight of fine particles, they stay in the atmos...

AI Technical Summary

Problems solved by technology

The agglomeration methods currently being studied include: electrical agglomeration, acoustic agglomeration, phase change coagulation growth, and chemical agglomeration, etc., but these agglomeration methods have certain disadvantages when they work alone, and the agglomeration effect on fine particles is not very obvious, so the final The removal efficiency of fine particles cannot be effectively improved

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